References

1. Henikoff, S. and Henikoff, J. G. (1992). Amino acid substitution matrices from protein blocks. Proc. Natl. Acad. Sci. USA 89: 10915-10919.
2. Thompson, J.D., Higgins, D.G. and Gibson, T.J. (1994) CLUSTAL W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, positions-specific gap penalties and weight matrix choice. Nucleic Acids Research, 22:4673-4680.
3. Taylor WR. (1997) Residual colours: a proposal for aminochromography. Protein Eng., 10, 743-746
4. Kyte J, Doolittle RF. (1982) A simple method for displaying the hydropathic character of a protein. J Mol Biol., 157, 105-132.
5. Levitt M. (1978) Conformational preferences of amino acids in globular proteins. Biochemistry, 17, 4277-4285.
6. Livingstone, C. D. and Barton. G. J. (1993), CABIOS 9, 745-756.
7. Zvelebil, M. J. J. M. et al (1987), J. Mol. Biol., 195 957-961.